Notably, Sanyal was the daughter of Indian Navy officer Gulab Mohanlal Hiranandani, who had played a key role in Operation Trident, during the 1971 war with Pakistan.
Sanyal graduated from Sydenham college Mumbai in 1982 with an MBA from INSEAD, France in 1983.
In her 30-year-long banking career, she rose to prominent heights. Sanyal had also served as the COO of ABN AMRO, Asia.
She was reportedly ill for some time
In November, she released a book titled The Big Reverse, on PM Modi's demonetization move. Hinting at her failing health, she once wrote, "There were days when I felt the book would never see the light of day."